
Commercial Operators
Commercial vessel maintenance and fleet management software.
Keep every vessel ready for service.
Bring maintenance, defects, compliance and operational information together so technical teams stay in control without adding more administration.
Keep the work moving. Keep vessels ready.
One connected platform for maintenance, defects, logs, forms and inventory. Crews see their daily work; shore teams see what they need to support reliable service.
Built for ferries, passenger vessels, workboats and commercial fleets.

Commercial Vessel Maintenance Software
Simple onboard. Clear ashore.
Six areas of work, one record shared by the vessel and the office.
Planned and corrective maintenance
- Calendar, running-hour and condition-based schedules
- Corrective jobs raised from defects and inspections
- Due, overdue and upcoming work across the fleet
Defect management
- Raised onboard with detail and photographs
- Tracked by severity and owner through to close-out
- History kept against each component
Compliance, forms and logs
- Digital logs, checklists and operational forms
- Records ready for inspections, surveys and audits
- Certificates and expiry dates tracked per vessel
Inventory, spares and documents
- Spares and consumables by vessel and store
- Critical spares visible before a job starts
- Manuals and drawings filed against the equipment
Vessel-to-shore reporting
- Outstanding work visible without chasing updates
- One record shared by the vessel and the office
- Reports that reflect the work actually completed
Fleet oversight and performance
- Maintenance, defects and compliance compared across vessels
- Machinery condition reviewed with operational data
- Fuel and energy use alongside speed and conditions
Predictive Maintenance for Commercial Fleets
From vessel data to earlier maintenance action
Mariners Log reads the machinery, maintenance and operational data your fleet already produces and flags conditions that are changing. Teams hear about a developing problem as an alert, not as a failure in service.

For crews
Earlier warning of a developing machinery problem, with a recommended action.
For shore teams
A clearer view of which vessel and which job needs attention first.
For the fleet
Supports more reliable service and helps identify unnecessary fuel and energy use.
Implementation & Ongoing Support
A working partnership, not just software.
We work alongside your team to understand the operational problems, configure Mariners Log around real workflows, and provide ongoing support as your needs evolve.
Tailored demo
Built around your vessels, current systems and priorities.
3-month paid pilot
An agreed pilot in real operation, with guided setup and training.
Annual subscription
Continue on an annual subscription once the pilot has proved its fit.
What the subscription includes.
Standard onboarding, training and ongoing support. The 3-month pilot is priced separately and agreed upfront.
Alongside what you already use.
Works alongside your existing systems. Bespoke integration or custom work is scoped and agreed upfront.
